Insulated joint.



PATENTED JULYZI, 1903.

J. D. KEILEY. INSULATED JOINT.

APPLIGATION FILED APR. 25. 1903.

N0 MODEL.

- 5 UNITED STATES Patented J'uly 21, 1903 PATENT OFFICE;

JOHN D. KEILEY, OF NEW YORK, N. Y., ASSIGNOR TO THE WEBER RAILWAY JOINTMANUFACTURING COMPANY, OF NEW YORK, N. Y., A CORPORA- TION OF WESTVIRGINIA.

INSULATED JOINT.

SPECIFICATION formingpart of Letters Patent NO. 734,419, dated July 21,1903.

Application filed April 25, 1903. Serial No.154,307. (N model.)

To all whom it may concern:

Be it knownthat I, JorIND. KEILEY, a citizen of the United States, and aresident of the borough of Brooklyn, county of Kings,

city and State of New York, have invented certain new and usefulImprovements in Insulated Joints, of which the following is aspecification, accompanied by drawings.

This invention relates to insulated railjoints; and its objects are toimprove upon the construction of such joints for railroadrail sectionsand improve their efficiency and high insulating qualities.

Further objects of the invention will here- I 5 inafter appear; and tothese ends the invention consists of devices for carrying out the aboveobjects constructed and arranged as hereinafter more fully described andclaimed in this specification and shown in the accompanying drawings, inwhich- Figure 1 is a transverse sectional view of a rail-joint embodyingthe invention, and Fig.

2 is a plan view of the same.

Referring to the drawings, A and B repre- 2 5 sent the ends of two railsto be insulated from each other. The rails are shown supported upon asuitable chair 0, comprising the base D and upright E. Arranged at eachside of the webs of the rails are insulating packingblocks F and G, inthis instance of wood.

Preferably a metallic strengthening-bar H extends along the inside ofthe joint, and suitable bolts I secure the parts of the joint together.The heads J, nuts K, and shanks of the bolts are suitably insulated fromthe metallic parts of the joint, in this instance, as shown, by suitableinsulating-washers L and insulating-sleeves O. As shown, metallicwashers P are arranged beneath the heads and nuts of the bolts.

The improvement relates more particularly to the insulation of the basesofthe rails from the rail-chair. It is extremely desirable to thoroughlyinsulate the bases of the rails from the chair, and according to thisconstruction insulation of high efficiency is obtained. Beneath thebases of the rails, or beneath the base of at least one rail, layers ofinsulating material are arranged, one of these layers betraffic over therails.

sulating material serve to thoroughly insucac'eousmateriahor a sheet ofmica, while the layer R, arranged over thelayer Q, is of 55 thicker andtougher material of relatively lower insulation, such as vulcanizedfiber or other similar tough material. One of the obj ects of placingthe thicker and tougher layer over the thinner layer of less durablemate- 6o rial is to form a soft-surface or cushion for the micaceousmatter to prevent injury due to the shocks and jars incident to constantThe two layers of inlate the joint. Any suitable means may be providedfor maintaining the insulation in position upon the chair-as, forinstance, by extending the layer R of material upwardly between thepacking-block G and the upright of thechair so that when the joint istightened the upwardly-extending portion of the insulation is tightlygripped between the packing-block and the chair.

I do not herein claim the strap or band eX= tending across the joint andopposing the upright of the rail-chair, as insulated railjointsembodying this feature are shown, de= scribed, and claimed in thecopending appli-- cations of George A. Weber, to which I have permissionto refer, as follows: Serial Nos. 63,124 and 63,125, filed June 4, 1901;Serial No. 87,053, filed December 24:, 1901; Serial No. 124,193, filedSeptember 20,- 1902, and Serial No. 133,770, filed December 3, 1902.

Obviously some features of this invention may be used without others,and the invention may be embodied in widely-varying forms. 5 I ITherefore without limiting the invention 0 to the construction shown anddescribed or enumerating equivalents I claim, and desire to secure byLetters Patent, the following:

1. In a rail-joint, the combination with rail ends to be insulated onefrom the other, of a 5 suitable support for said rails, and means forholding the rails in proper alinement, a thin layer of material ofrelatively high insulation and a thicker layer of tougher material ofrelatively lower insulation, both arranged between at least one of therails and the support, for substantially the purposes set forth.

2. In a rail-joint, the combination with the rail ends of a rail-chaircomprising a base and an upright, insulatingblocks arranged at each sideof the webs of the rails, bolts for securing the parts of the jointtogether, means 10 for insulating said bolts from the metallic parts ofthe joint, a thin layer of material of relatively high insulationarranged upon the base of the chair, and a thicker layer of toughermaterial of relatively lower insulation arranged over said thin layerand beneath the base of at least one of the rails, for substair tiallythe purposes set forth.

In testimony whereof I have signed this specification in the presence oftwo subscribing witnesses.

JOHN D. KEILEY. lVitnesses:

PERCY IIOLBROOK, GEo. A. WEBER.

